Risk of serious eye problems i e corneal ulcer is greater for extended wear.
Air optix toric markings.
Focus dailies toric inversion mark.
3 marks at 5 6 and 7 30 degrees apart markings on purevision toric for astigmatism.
For example a 3 00 1 25 x 180 lens features the code cibab753.
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Currently three silicone hydrogel toric lenses are available purevision toric acuvue advance for astigmatism and air optix toric ciba vision with more due in the near future.
Air optix and o2 optix inversion markings.
Air optix for astigmatism alcon lenses have markings in the 11 o clock to the 1 o clock area of the lens.
Virtually all soft toric lenses have one or more orientation markings that are visible through a slit lamp.
Ciba 2 numbers letters.
Important information for air optix plus hydraglyde multifocal lotrafilcon b contact lenses.
Most have their markings at the 6 00 position on the.
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Markings on soflens toric for astigmatism.
The b signifies the air optix for astigmatism design.
For daily wear or extended wear up to 6 nights for near far sightedness presbyopia and or astigmatism.